Portable concrete-mixer.



S. D. HOY.

PORTABLE CONCRETE MIXER.

APPLICATION FILED APR. 1, 1913.

Patented June 6, 1916.

2 SHEETS-SHEET 1.

rm: cnumnm PLANOGRAPH cm, WASHINGTON, D. c-

S. D. HOY.

PORTABLE CONCRETE MIXER APPLICATION FILED APR.1, 191s.

Patented June 6, 1916.

2 SHEETS-SHEET 2.

iv WW we? y W Lumum FLANOGRAPH co.. WASHINGTON. D. c.

SIDNEY D. I-IOYAOF SIOUX CITY, IOWA.

PORTABLE CONCRETE-MIXER.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed April 1, 1913. Serial No. 758,231; i

To all whom it may concern: Be it known that I, SIDNEY D. 1101', a citi-' zen of the United States, residing at Sioux City, in the county of Woodbury and Stateof Iowa, have invented new and useful Improvementsin Portable Concrete-Mixers," of which the following is a specification.

This invention relates to improvements in concrete mixers and it proposes a portable concrete mixer which is especially designed for local or domestic use, e.-'g. for use in the preparation of relatively small'bat'ches of concrete,- such as maybe frequently'required on a farm in connection with the construction of out buildings, the erection of fences or porches, the installation of hydraulic rams, and various other operations-of everyday occurrence in the up keep of amodern farm. The objectsof the invention are to providea concrete mixer which shall be of inexpensive construction, and of strong and durable character, involving no partsof del l icate nature or which are readily liable to breakage or injury; which shall'be very light'in weight and as readily portable as an ordinary wheel-barrow; which may beoperated with" ease and facility, as regards boththe mixing of the batch and the' discharge thereof; which shall thoroughly and rapidly mix the ingredients of the concrete; and in which the operating parts are compactly arranged and accessibly located.

An embodiment ofthe invention is illustrated in the accompanying drawings, wherein: Figure 1 is a verticalcentral sectional view of a portable concrete mixer in which the features of the invention are incorporated; Fig. 2, is a side elevation thereof, showing the mixing barrel in a position at right angles to the position it occupies in Fig.1; Fig. 3 is a front elevation thereof, partly in section, to show the details of the end closure ofthe mixing barrel; Fig. 4, is a detail front elevation showing the disengaged posi tion of the pawls or detents which areprovided to hold the mixing barrel against movement when the machine is being wheeled from one point to another; Fig. 5 isa de tail sectional view of the end closure shown in Fig." 3, but showing a partly open relation thereof. r

7 Similar characters of reference designate corresponding parts throughout the several views.

The mixing operation is accomplished by means of a rotatable barrel 1 which preferably has an ovalcross'section and'has-it's axis of rotation centrallyl'o'cated and eoim cident" with its smallest diameter. The barrel l rotates on a stationary shaft 2 and carrles a-bearing sleeve 3 which surrounds said shaftand extends transversely through said barreL- -;The objects of the invention are served by organizlng the machine'along the general lan of a wheel-barrow, the mixing barrel ing arranged inrelation to a cradle or framewhich takes the place of the body of the ordinary barrow, and furnishes an im movablesupport'for the barrel during the concrete mixing operation, The-cr'adle or frame which supports the mixing barrel 1 ispreferably made in one piece, excepting, of course, certain braces and stays. The

material used may be ordinary piping which 1s fashioned to provide two U-shaped side standards 4:,anarch-shaped member 5 extending between the upper front ends; of said standards, and handles 6 projecting rearwardly from the upper rear ends of said 7 standards. -Cross bars. 7 and 8, arranged at the same elevation, connect the standards 4 at their upper front and-rear ends, thecross bar? being located in a vertical plane coincident with the member 5. The bars 7 and 8 'furnish'support for-theshaft'2 and are provided with centrally arranged beare ings or brackets 'in which the ends of said sha-ft'are held. s I

The front bars of the-standards4 furnish supportfora forwardly projecting'yoke 9 and the ground wheel 10 is arranged between the side bars-of the yoke, the latter having bearingsfor the axle or hub spindle of said wheel. The yoke 9 is reinforced by braces '11 which connect the side bars there of and the; front bars of the standards 4.

The rotation of the barrel 1 is effected by suitable gearing which conveniently comprises a relatively large spur wheel'12'f'ast on the sleeve3,and 'a relatively'small pinj- T ion 13- arranged above the spur wheel-l2 and having its shaft journaled in a strap 14 secured to the sidebars of the member 5 and provided with a "crank handle-15.;

: -Suitabl ip v 'isima e for preven ing rotation or turning movement of the mixing barrel when the machine is being wheeled from place to place. As shown in Figs. 3 and l, detents 16 are pivoted to the sides of the member 5 and are connected by links 17 to a lever 18 which is pivoted at one end thereof to the cross bar 7. Adjacent the free end of said lever the frame carries a lug 19 upon which the lever is supported, as shown in Fig. 4E, during the mixing operation. lVhen the lever 18 rests on the lug 19, the detents 16 are disengaged from the wheel 12 with which they coact, and the gearing for rotating the barrel 1 may be freely operated. When the mixing operation has been completed, or when it is'desired to arrest the rotation of the barrel 1, the lever 18 is disengaged from the lug 19 and dropped to the position shown in Fig. 3, at which time the detents 16 engage the teeth of the wheel 12. It will be understood that the leverlS has some loose play about its pivot pin, and consequently, that it may be moved laterally through a slight range and therebyreadily engaged with and disengaged from the lug 19.

As already stated, the machine effects a rapid and thorough mixing of the ingredients of the concrete. This rapidity and thoroughness of action is due, in part, to the cross sectional outline of thebarrel l and the selection of the axis 2 in relation thereto, and in part to the provision. of baffles 20, consisting, in the instance disclosed, of transversely extending bars arranged in upper and lower series and adjacent the ends ot' said barrel. As the barrel is rotated, the material is rapidly, violently, and as a body or in bulk, overturned, and thrown from one end of the barrel to the other. During this movement of the material inthe longitudinal plane of the barrel, the battles 20 act to thoroughly and continu: ously divide or break up the shifting mass, and the action of these ba'liies is rendered the more efficient since the oval cross sectional shape of the barrel assures of substantial, and violent or forcible shifting movements of the material as a mass.

The ingredients to be mixed may be con.- veniently introduced into the barrel 1 through an elongated opening in the curved wall thereof, which opening is normally closed by a suitable lid 21, preferably having a hinged mounting, and positively held. in closed position by a suitably constructed sliding bolt 22.

The end walls of the barrel 1 are preferably fiat and may be conveniently utilized inconnection with the discharge of the concrete after the mixing operation. The ends walls are provided with relatively large openings 23. which extend from the curved wall of said barrel through nearly half of the length of the fiat walls, and are located in relation to one of. the longitudinal nodal portions of thebarrel. Each ot the end walls of the barrel is provided with a discharge opening 23, in order that the contents ofthe barrel may be discharged at either side of the machine, in accordance with the dictates of convenience. The discharge of material from the barrel is effected by tilting the barrel in either direction to a position mid-way between. the position of Figs. 2 and 3, locking the barrel against rotation, from the position to which it is tilted, and uncovering, the lower of the openings 23. The nodal portion of the barrel 1, in relation to which said openings are arranged, will obviously function as an inclined chute and discharge the material through the lower uncovered opening 23.

The openings 23 are controlled by slides 2%, the edge portions of which engage in guide members 25 extending longitudinally of the end walls of the barrel, and which hold said slides in relation to said end walls. Each slide 24' may be conveniently operated by a lever 26, which is pivoted to the end wall upon which the slide is arranged and. is connected to the slide by a link 27. In the closed position of the slides, the lever 26 and the link 27 lie adjacent one another in parallel relation, and. in positions ofdead center. To open the slide, the lever26 is moved from the position shown in Fig. 3 to a position in which it is in line with the link 27, and projects beyond the end wall.

of the mixing barrel. At such time the slide will be held. in openposition. Fig. 5. showsa slide 24; in partially open position.

The standards 4: are suitably bracedand connected, and at their rear sides are preferably equipped with L-shaped members 1 which, when the machine is at rest, engage the ground as supports and insure that the machine has suitable stability during the mixing operation.

It will be apparent that the machine may be economically manufactured; that it embodies no parts which are liable to breakage or derangement; that the parts which it embodies are compactly organized and are readily accessible; that on account of its lightness it. may be readily wheeled from the plane of its rotation and having end walls provided with discharge openings which extend to said nodal portion and are located at the same side of said axis, and movable closures for said openings, the mixing barrel being movable about its axis of rotation to an inclined position wherein its nodal portion may function as a chute to efiect the discharge of material from either end of said barrel in accordance with 10 the direction of inclination thereof.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

SIDNEY D. HOY. Witnesses:

NELLIE VERSTEGEN, A. E. MCMANUS.

Copies of thin patent may be obtained for five cents each, by addressing the "Commissioner of Patents. Washington. D. G. 

